我正在使用cffi创建一个python程序,以针对真正的libc函数测试我的C / ASM库。
我尝试使用setuptools设置不同的cffi模块。所以这是我的文件树:
这是我的libftasm_builder.py:
from cffi import FFI
ffiBuilder = FFI()
ffiBuilder.cdef("""
void ft_bzero(void *s, size_t n);
char *ft_strcat(char *dest, const char *src);
int ft_isalpha(int c);
int ft_isdigit(int c);
int ft_isalnum(int c);
int ft_isascii(int c);
int ft_isprint(int c);
int ft_toupper(int c);
int ft_tolower(int c);
int ft_puts(const char *s);
size_t ft_strlen(const char *s);
void *ft_memset(void *s, int c, size_t n);
void *ft_memcpy(void *dest, const void *src, size_t n);
char *ft_strdup(const char *s);
void ft_cat(int fd);
int ft_islower(int c);
int ft_isupper(int c);
""")
ffiBuilder.set_source("_libasm_cffi",
"""
#include "libftasm.h"
""",
include_dirs=['/Users/sle-lieg/libasm/libftasm/header/'],
library_dirs=['/Users/sle-lieg/libasm/libftasm/'],
libraries=['ftasm']
)
if __name__ == "__main__":
ffiBuilder.compile(verbose=True)
和我的setup.py:
from setuptools import setup
setup(
setup_requires=["cffi>=1.0.0"],
cffi_modules=[
"libftasm_builder.py:ffiBuilder",
"libc_builder.py:ffiBuilder"
],
install_requires=["cffi>=1.0.0"]
)
因此它构建良好,如您在文件树中看到的,我有我的cffi_files,但是当我尝试执行libasm_tester.py时,出现此错误:
Traceback (most recent call last):
File "libasm_tester.py", line 4, in <module>
from _libasm_cffi import ffi, lib
ImportError: dlopen(/Users/sle-lieg/libasm/libftasm/lib_tester/build/lib.macosx-10.12-x86_64-3.7/_libasm_cffi.abi3.so, 2): Library not loaded: libftasm.dylib
Referenced from: /Users/sle-lieg/libasm/libftasm/lib_tester/build/lib.macosx-10.12-x86_64-3.7/_libasm_cffi.abi3.so
Reason: image not found
我不明白为什么我会尝试从build / lib / _libasm_cffi.abi3.so打开lib,因为我告诉libasm_builder:
library_dirs=['/Users/sle-lieg/libasm/libftasm/']
我在这里想念什么? :(。谢谢!
[编辑]
在我的libasm_tester.py中,我必须将其添加到文件顶部才能导入cffi_modules:
import sys
sys.path.insert(0, '/Users/sle-lieg/libasm/libftasm/lib_tester/build/lib.macosx-10.12-x86_64-3.7/')
from _libasm_cffi import ffi, lib
from _libc_cffi import lib as libC
可能是原因吗?但是,如果我不添加,则无法导入cffi模块...
答案 0 :(得分:0)
确定找到了解决方法:
export DYLD_LIBRARY_PATH=/path/to/your/lib
这显然很有意义,因为该库不在dlopen()使用的默认路径中...